Pipe sizing and truing tool



Oct. 18, 1960 BROOKHOUSE 2,956,459

PIPE SIZING AND TRUING TOOL Filed Aug. 29, 1958 Herman Brook/muse 1N VENTOR.

BY 2mm United States Patent PIPE SIZING AND TRUlNG TOOL Herman'Brookhouse, 129- E. 20th St., Holland, Mich.

Filed Aug. 29, 1958, Ser. No. 758,031

3 Claims. (Cl. 81-15) This invention relates to new and usefulimprovements in sizing and truing tools for use particularly althoughnot necessarily, in engine mufiler, exhaust and tail pipe openings inmotor vehicle service stations and has for its primary object toprovide, in a manner as hereinafter set forth, a device of thischaracter which may be readily adjusted to be used in openings of allsizes within a given range.

Other objects of the present invention are to provide an adjustable pipesizing and truing tool of the aforementioned character which will becomparatively simple in construction, strong, durable, compact, of lightweight and which may be manufactured at low cost.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer [to like parts throughout, and in which:

Figure l is a View in side elevation of an adjustable pipe sizing andtruing tool constructed in accordance with the present invention,showing a portion of the device broken away in section;

Figure 2 is a view in front elevation of the tool;

Figure 3 is a rear elevational view;

Figure 4 is an enlarged fragmentary view in vertical section, takensubstantially on the line 4-4 of Figure 2; and

Figure 5 is a reduced view in transverse section, taken substantially onthe line 55 of Figure 4, showing the device engaged in a pipe.

Referring now to the drawing in detail, it will be seen that theembodiment of the invention which has been illustrated comprises anelongated handle 6 of suitable metal. The handle 6, which may also be ofany desired dimensions, is provided in its upper end portion with anopening 7 to facilitate hanging the tool on a rack or other support.Mounted on the lower end portion of the handle 6 is a head which isdesignated generally by reference character 8.

The head 8 includes an elongated metallic plate 9 which, in theembodiment shown, is rigidly secured longitudinally on the lower endportion of the handle 6 in a manner to depend therefrom through themedium of rivets 10. Formed longitudinally in an intermediate portion ofthe plate 9 is a slot 11. The plate 9 is further provided, in its lowerend portion, with a pair of threaded openings 12.

The head 8 further includes a pair of stationary horizontal shafts orspindles 13 on the lower end portion of the plate 9. The spindles 13comprise reduced, threaded shanks 14 which are screwed into the openings12 and which provide shoulders 15 which abut the plate 9. Kerfed heads17 are provided on the outer ends of the spindles 13. Rollers 18 arejournalled on the spindles 13.

Mounted on the plate 9 above the spindles 13 and ad Threadedly mountedlongitudinally in the lower end portion of the plate 9 is an adjustingscrew 25. The screw 25 projects into the slot 11 and is engaged with thereduced end portion 20 of the spindle 19 for adjusting the upper roller24 toward or away from the stationary lower rollers 18. In Figure 4 ofthe drawing, the shoulder of the spindle 19 which abuts the plate 9 isindicated at 26.

It is thought that the use of the tool will be readily apparent from aconsideration of the foregoing. Briefly, the rollers 18 and 24 areengaged longitudinally in the end portion of the pipe to be sized andtrued, as indicated at 27 in Figure 5 of the drawing. The tool is thenturned while the screw 25 is adjusted to engage the rollers 18 and 24with the inner diameter of the pipe 27 thus removing dents and otherirregularities and restoring said pipe to a true cylindrical shape in anobvious manner.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those skilled in the art, it is not desired to limitthe invention to the exact construction and operation shown anddescribed, and accordingly all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

1. A pipe sizing and truing tool comprising: a plate, spindles securedat one end on said plate at right angles thereto, the other ends of saidspindles being free, rollers journalled on said spindles and operablecircumferentially on the inner diameter of the work, an operating handleon the plate, means for engaging the rollers with the work, said platehaving a slot therein, one of said spindles being slida-bly adjustablein the slot, said means including a screw threadedly mounted in theplate and operatively engaged with said one spindle in said slot foradjusting said one spindle in one direction, and means for frictionallysecuring said one spindle against movement in both directions in theslot.

2. A pipe sizing and truing tool comprising: a plate having a slottherein, a pair of stationary spindles secured at one end on the plateat right angles thereto, a movable spindle on the plate paralleling thestationary spindles and having one end adjustably secured in the slot,the other ends of all of the spindles being free rollers journalled onthe spindles and operable circumferentially on the inner diameter of thework, an adjusting screw threadedly mounted in the plate and projectinglongitudinally into the slot and engageable with the movable spindle foradjusting same in one direction in the slot for engaging the rollerswith the work, means for frictionally securing the movable spindleagainst movement in both directions in the slot, and an operating handleon the plate.

3. A pipe sizing and truing tool comprising: an elongated handle, anelongated plate secured longitudinally on one end portion of the handleand projecting therefrom, said plate having a longitudinal slot in anintermediate portion thereof, a pair of transversely spaced, parallelstationary spindles having one end secured on the outer end portion ofthe plate at light angles thereto,

Patented Oct. 18, 1960' a: movable spindle on said intermediate portionof said plate paralleling the stationary spindles and having one endadjustably secured in the slot, the other ends of all of the spindlesbeing free rollers journalled on the spindies and operablecircumferentially on the inner diameter of the work, an adjusting screwthreadedly mounted: in 1 said' outer end portion of the plate andprojecting longitudinally into the slot and engaged with the movablespindle for adjusting samein one direction in said slot for operativelyengaging the rollers with the work and a retaining nut threaded on themovable spindle and; engageable with the plate for frictionally securingsaid movable spindle against movement in both directions in the slot.

References Cited in the file of this patent UNITED STATES PATENTSThielmann et a1 June 19, 1906 Hart Jan. 12, 1909 Loveless Sept. 22, 1931Jacquesson Oct. 13, 1931 Greiner Oct. 4, 1932 Buck Sept. 19, 1933 KnorrSept. 22, 1959 FOREIGN PATENTS Great Britain Apr. 4, 1941 France July16, 1924

